Add index scan pgstat test coverage. Add tests that verify the exact values of the idx_tup_read and idx_tup_fetch counters in pg_stat_all_indexes. There was no existing coverage of pg_stat_all_indexes, beyond some counter reset tests; idx_tup_read and idx_tup_fetch had no tests at all.
This is preparation for an upcoming commit that will move index scan heap fetches behind a new slot-based table AM interface, relocating the code that maintains these counters. Author: Peter Geoghegan <[email protected]> Reviewed-by: Tomas Vondra <[email protected]> Discussion: https://postgr.es/m/CAH2-Wz%3DV0V5WGuo85D-OF%2BTM_CxU3q%3DMMkY-ebY0K8xc-9Xykw%40mail.gmail.com Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/83032dc42cab67dfdd33152d08434785977f069f Modified Files -------------- src/test/regress/expected/stats.out | 62 +++++++++++++++++++++++++++++++++++++ src/test/regress/sql/stats.sql | 32 +++++++++++++++++++ 2 files changed, 94 insertions(+)
